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R Reference Card

R Reference Card by Tom Short EPRI PEAC



psych: Procedures for Psychological Psychometric

https://cran.r-project.org/web/packages/psych/psych.pdf



metafor: Meta-Analysis Package for R

26?/08?/2022 Network meta- ... package website: https://www.metafor-project.org ... See also Morris and DeShon (2002) for a thorough discussion of the ...



An Introduction to R

CRAN family of Internet sites (via https://CRAN.R-project.org) and elsewhere. More details on packages are given later (see Chapter 13 [Packages] page 77).



R pour les débutants

site internet du Comprehensive R Archive Network (CRAN)5 o`u se trouvent aussi les instructions `a suivre 3http://cran.r-project.org/doc/FAQ/R-FAQ.html.



R for Beginners

distributed from the internet site of the Comprehensive R Archive Network. (CRAN)5 where the instructions 3http://cran.r-project.org/doc/FAQ/R-FAQ.html.



rpart.pdf

https://cran.r-project.org/package=rpart. BugReports https://github.com/bethatkinson/rpart/issues. Date/Publication 2022-01-24 20:12:45 UTC.



adespatial: Multivariate Multiscale Spatial Analysis

02?/09?/2022 See https://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system. Value. A matrix with n rows containing a set of k ...



randomForest: Breiman and Cutlers Random Forests for

URL https://www.stat.berkeley.edu/~breiman/RandomForests/. NeedsCompilation yes. Repository CRAN. Date/Publication 2022-05-23 08:27:49 UTC. R topics 



atable: Create Tables for Reporting Clinical Trials

BugReports https://github.com/arminstroebel/atable/issues. NeedsCompilation no. Repository CRAN. Date/Publication 2022-02-21 09:00:21 UTC. R topics 



The Comprehensive R Archive Network - ISM

R is very much a vehicle for newly developing methods of interactive data analysis It has developed rapidly and has been extended by a large collection of packages However most programs written in R are essentially ephemeral written for a single piece of data analysis 1 2 Related software and documentation

What are R and Cran (•• )?

What are R ??? and CRAN ???? (´•?•`)? R is ‘GGNU S’, a freely available language and environment for statistical computing and graphics which provides a wide variety of statistical and graphical techniques: linear and nonlinear modelling, statistical tests, time series analysis, classification, clustering, etc.

Where can I find Cran data?

CRAN is covered by Thomson Reuters Data Citation Index. CRAN is covered by SCOPUS. Data is available under GNU license. Mirror sites can be found here https://cran.r-project.org/mirrors.html .

How do I submit a package to Cran?

To “submit” a package to CRAN, check that your submission meets the CRAN Repository Policy and then use the web form . If this fails, send an email to CRAN-submissions@R-project.org following the policy. Please do not attach submissions to emails, because this will clutter up the mailboxes of half a dozen people.

How many R packages are there?

SeeSection “R packages” inR FAQ, for a complete list. There are thousands of contributed packages for R, written by many different authors. Someof these packages implement specialized statistical methods, others give access to data or hard-ware, and others are designed to complement textbooks.

RforBeginners

EmmanuelParadis

InstitutdesSciencesdel'Evolution

UniversiteMontpellierII

F-34095Montpelliercedex05

France

E-mail:paradis@isem.univ-montp2.fr

c copyrightnoticeisincluded.

Contents

1Preamble1

2Afewconceptsbeforestarting3

3DatawithR9

4GraphicswithR36

5StatisticalanalyseswithR55

6ProgrammingwithRinpratice64

7LiteratureonR71

1Preamble

details,sometimeswithtables. andRobertGentleman

2.Thereareimportant

3,acopy

ofwhichisalsodistributedwithR. 4; astheRDevelopmentCoreTeam. (CRAN) analyses. 2See 3

4Formoreinformation:http://www.gnu.org/

5http://cran.r-project.org/

1 ableontheinternet exibility.Whereas exibility

6Forexample:http://stat.cmu.edu/S/

2

2Afewconceptsbeforestarting

Weshallseerstbrie

yhowRworks.Then,Iwilldescribethe\assign"

2.1HowRworks

so.

25).AnR

functionmaybesketchedasfollows: arguments! options! function defaultarguments =)result 3

67).The

thecomputer:notemporarylesareused(Fig.

1).Thereadingsandwritings

fromaremoteserverthroughinternet. functionsandoperators \data"objects ?6)XXXXXXXz \results"objects.../library/base/ /stast/ /graphics/ ...libraryof functions data les internet

PSJPEG...keyboard

mouse -commands screen

ActivememoryHarddisk

Figure1:AschematicviewofhowRworks.

thediskinadirectorycalledR

HOME/library(RHOMEisthedirectory

leR package. >n [1]10 4 ).Rdiscriminates orthereverse: >n<-15 >n [1]15 >5->n >n [1]5 >x<-1 >X<-10 >x [1]1 >X [1]10 >n<-10+2 >n [1]12 >n<-3+rnorm(1) >n [1]2.208807 andvarianceunity(p.

17).Notethatyoucansimplytypeanexpression

screenbutisnotstoredinmemory: >(10+2)*5 [1]60 5 derstanding. objectsaredisplayed. >name<-"Carmen";n1<-10;n2<-100;m<-0.5 >ls() [1]"m""n1""n2""name" used: >ls(pat="m") [1]"m""name" >ls(pat="^m") [1]"m" >ls.str() m:num0.5 n1:num10 n2:num100 name:chr"Carmen" detailswiththeoptionmax.level=-1: >M<-data.frame(n1,n2,m) >ls.str(pat="M")

M:`data.frame':1obs.of3variables:

$n1:num10 $n2:num100 $m:num0.5 >ls.str(pat="M",max.level=-1)

M:`data.frame':1obs.of3variables:

6

2.3Theon-linehelp

>?lm

Error:syntaxerror

>help("*")

Arithmeticpackage:baseRDocumentation

ArithmeticOperators

bysectionswhichgivedetailedinformation.

Description:briefdescription.

thetypicaluse.

Details:detaileddescription.

ator. thehelpwiththefunctionexample. 7 >help("bs") youcouldtry'help.search("bs")' >help("bs",try.all.packages=TRUE) canbefoundinthefollowingpackages:

PackageLibrary

splines/usr/lib/R/library theoptionpackage: >help("bs",package="splines") bspackage:splinesRDocumentation

B-SplineBasisforPolynomialSplines

Description:

>help.start() =TRUE)). >apropos(help) [1]"help"".helpForCall""help.search" [4]"help.start" 8

3DatawithR

3.1Objects

dependsontheattributesofthelatter. numeric,character,complex >x<-1 >mode(x) [1]"numeric" >length(x) [1]1 >A<-"Gomphotherium";compar<-TRUE;z<-1i >mode(A);mode(compar);mode(z) [1]"character" [1]"logical" [1]"complex" >N<-2.1e23 >N [1]2.1e+23 9 >x<-5/0 >x [1]Inf >exp(x) [1]Inf >exp(-x) [1]0 >x-x [1]NaN 14, theoptionqmethodofthisfunction). >x [1]"Doublequotes\"delimitateR'sstrings." >cat(x)

Doublequotes"delimitateR'sstrings.

slashes(butsinglequotesmustbe!): >x [1]"Doublequotes\"delimitateR'sstrings." data. objectmodesseveralmodes possibleinthe sameobject? factornumericorcharacterNo tsnumeric,character,complexorlogicalNo function,expression,... 10 object,includedlists!

3.2Readingdatainale

directory. 8 restrictheretoreadinglesinASCIIformat. nameddata.dat,thecommand: >mydata<-read.table("data.dat") mydata[,1],mydata[,2],...

9Thereareseveraloptionswhosedefault

thefollowingtable: adataframe.Wewillseelater(p.

18)somedetailsonmanipulatingobjects.

11 colClasses=NA,nrows=-1, strip.white=FALSE,blank.lines.skip=TRUE, comment.char="#") typeURL(http://...) thevariablesonitsrstline tabulation decthecharacterusedforthedecimalpoint le(bydefault:1,2,3,...) columns \blanks"areadded thecharactervariables comment.char="") values: fill=TRUE,...) fill=TRUE,...) fill=TRUE,...) fill=TRUE,...) 12

Thefunctionscanismore

exiblethanread.table.Adierenceisthat quote=if(sep=="\n")""else"'\"",dec=".", skip=0,nlines=0,na.strings="NA", allowEscapes=TRUE) blankline) septheeldseparatorusedinthele decthecharacterusedforthedecimalpoint nlinesthenumberoflinestoread datale) \blanks"areadded thecharactervariables beenread blank.lines.skipifTRUE,ignoresblanklines onasinglelineinthele(FALSE) fault)orreadasverbatim 13 widthformat: as.is=FALSE,skip=0,row.names,col.names, n=-1,buffersize=2000,...) ceptwidthswhichspeciesthewidthoftheelds withthefollowingcommand:

A1.501.2

A1.551.3

B1.601.4

B1.651.5

C1.701.6

C1.751.7

>mydata

V1V2V3

1A1.501.2

2A1.551.3

3B1.601.4

4B1.651.5

5C1.701.6

6C1.751.7

3.3Savingdata

andoptionsare: eol="\n",na="NA",dec=".",row.names=TRUE, xthenameoftheobjecttobewritten septheeldseparatorusedinthele nathecharactertobeusedformissingdata decthecharacterusedforthedecimalpoint col.namesid.forthenamesofthecolumns byn",if"d"each"isreplacedby"" 14 thelealreadyexists(FALSE,thedefault). =ls(all=TRUE),file=".RData").

3.4Generatingdata

3.4.1Regularsequences

with: >x<-1:30 arithmeticoperatorswithinanexpression: >1:10-1 [1]0123456789 >1:(10-1) [1]123456789 >seq(1,5,0.5) [1]1.01.52.02.53.03.54.04.55.0

Onecanusealso:

>seq(length=9,from=1,to=5) [1]1.01.52.02.53.03.54.04.55.0 >c(1,1.5,2,2.5,3,3.5,4,4.5,5) [1]1.01.52.02.53.03.54.04.55.0 15 >z<-scan()

1:1.01.52.02.53.03.54.04.55.0

10:

Read9items

>z [1]1.01.52.02.53.03.54.04.55.0 >rep(1,30) [1]111111111111111111111111111111 bythenumbersgivenasarguments: >sequence(4:5) [1]123412345 >sequence(c(10,5)) [1]1234567891012345 >gl(3,5) [1]111112222233333

Levels:123

>gl(3,5,length=30) [1]111112222233333111112222233333

Levels:123

>gl(2,6,label=c("Male","Female")) [1]MaleMaleMaleMaleMaleMale [7]FemaleFemaleFemaleFemaleFemaleFemale

Levels:MaleFemale

>gl(2,10) [1]11111111112222222222

Levels:12

>gl(2,1,length=20) [1]12121212121212121212

Levels:12

>gl(2,2,length=20) [1]11221122112211221122

Levels:12

16 torsorfactorsgivenasarguments: hwsex

160100Male

quotesdbs_dbs17.pdfusesText_23
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